644 citations · 2.2k across the 41 of their papers we have counts for
11 papers · 1 filter
Designing nontrivial one-dimensional Floquet topological phases using a spin-1/2 double-kicked rotor
Yusuke Koyama, Kazuya Fujimoto, Shuta Nakajima +1
A quantum kicked rotor model is one of the promising systems to realize various Floquet topological phases. We consider a double-kicked rotor model for a one-dimensional quasi-spin…
Competition and interplay between topology and quasi-periodic disorder in Thouless pumping of ultracold atoms
Shuta Nakajima, Nobuyuki Takei, Keita Sakuma +3
Robustness against perturbations lies at the heart of topological phenomena. If, however, a perturbation such as disorder becomes dominant, it may cause a topological phase transit…
Dissipative Bose-Hubbard system with intrinsic two-body loss
Takafumi Tomita, Shuta Nakajima, Yosuke Takasu +1
We report an experimental study of dynamics of the metastable state of bosonic ytterbium atoms in an optical lattice. The dissipative Bose-Hubbard system with on-site two-b…
Observation of the Mott Insulator to Superfluid Crossover of a Driven-Dissipative Bose-Hubbard System
Takafumi Tomita, Shuta Nakajima, Ippei Danshita +2
Dissipation is ubiquitous in nature and plays a crucial role in quantum systems such as causing decoherence of quantum states. Recently, much attention has been paid to an intrigui…
A scanning gate microscope for cold atomic gases
Samuel Häusler, Shuta Nakajima, Martin Lebrat +4
We present a scanning probe microscopy technique for spatially resolving transport in cold atomic gases, in close analogy with scanning gate microscopy in semiconductor physics. Th…
Topological Thouless Pumping of Ultracold Fermions
Shuta Nakajima, Takafumi Tomita, Shintaro Taie +5
A gas of electrons in a one-dimensional periodic potential can be transported even in the absence of a voltage bias if the potential is modulated slowly and periodically in time. R…